Hundreds of years ago, hungry barn owls gobbled down small mammals called Nesophontes and regurgitated pellets of their remains. That mammal is now extinct, but a genetic analysis of the owl pellets reveals how it evolved from some of the earliest mammals approximately 70 million years ago. Nesophontes was a...
Introduction (Image credit: Pills photo via Shutterstock)America is in the midst of an opioid-abuse epidemic, which has caused a startling rise in overdoses and deaths from these highly addictive drugs. Here’s a look at the epidemic by the numbers. The increase in overdose deaths The number of people who have...